Impro vement in malt-kiln floors



F. W. WOLF. Malt-Kiln Floor.

No. 220,513. Patented Oct. 14, 1879. TVJWWW 1 W E b1 x El n..

x 1 FQ PATENT OFFICE.

FREDRIOK W. WOLF, OF` GHLO'AGO, ILLINOIS.

IMFJRLOVEMZENT IN M .ALT-KLLN FLOORS.

Specification formingpart of Letters Patent No. 220,513, dated October14, 1879 application filed f' April 21, 1879.

To all whomtmay concern:

Be it` known ,that `I,FREDRICK W. WoLF, of the city ofUhicago, in thecounty of (look and' State of Illinois, have invented certain new anduseful Improvements in Malt-Kiln Floors; and I hereby declarethefollowing to bela full, clear, and exact description thereof,reference beinghad to the acoompanyin g drawings, of `whichp Figure l isa plan view of a4 single section of my improved malt-kiln ioor withthe-cntral portion broken out j Fig. 2, a broken side view of a section;Fig. 3, a broken'end view; Fig. 4, an end View reduced; Fig. 5, a sideview reduced, and Figs. 6, 7and 8 detail views.

My invention relates to an improvement uponthe floors for malt-kilns andother purposesforming the subject of Letters Patent of .the UnitedStatesNo. 168,94S,issued October 1.9, 1875, to me, as assignee of thetinventor, Paul Weinig,vof Hallan, inthe Kingdom of Prussia.

rIhe invention of the said Weinig consists,

as set forth substantially in the Letters Patent aforesaid, inconstructing the said door in sections of blade-shaped wires setparallel with one another into a rectangular frame with their edgesdownward, such frame having notches for thewires tol rest in, and withcross-tics at regularintervals, riveted securely to the frame,

lto h old the latter together and support the flooring ofblade-shapedwires, said cross-ties being likewise notched to receive thewires, the said wiresbeing keyed straight, and then secured at thel endst-o the frame, and at intermediate; points to nthe cross-ties,A byswaging the metal of the frame and cross-ties down upon them.

I make no change whatever in the foregoing construction, so far asitgoes, my improvements being in the way of additions for the purpose ofsupplying certain needs and curin g, certain defects in theWeini g door,as hitherto constructed.

The objects of my invention may be stated as follows: For practical usetheframe ofeach section is made of hoop-iron set onn edge, and is ofquadrangular formythree feet long and eighteen `inches broad, and thercross-ties are set at intervals of three inches throughout the length. Ihave found this distance between the cross-ties to be too great, owingto the slcnderness of the wires and their consequent liability to becomebent; and this difficulty I aim to overcome without, for reasonshereinafter to appear, varying the general structure.

Furthermore, much difficulty has always hitherto existed in ittin g thesections together so as to form perfect joints at the ends, forheretofore the ends of the wires have been filed. o until they wereconterminous with the frame, and this operation has been found verydifficult to perform without also filing the swaged rivet, thusweakening the same, and in some cases setting the ends of one or more ofi the wires entirely free; besides which, as the end and side bars ofhoop-iron are rarely perfectly straight and flat, they do not coincideperfectly when set together, whereby spaces intervene. My invention aimsalso to overcome these defects.

My invention consists, first, in inserting between each two cross-tiesan auxiliary tie-bar notched to receive the blade-shaped wires, thelower part only of the said wires entering the notches; secondly, in themanner in which I insert and secure these auxiliary tie-bars in framesalready riveted together; thirdly, in having the wires project a shortdistance beyond the end bars of the frame, and having the unbent partsabove the gashes in the ends of the side bars conterminous with them;and, fourthly, in the arrangement as to relative sitnation of thebolt-holes inthe sides and ends vof the frame, whereby these holes willcoincide with each other however the sections are placed, all ashereinafter more fully set forth.

In the drawings, A A are the blade-shaped wires; B, the side bars; G,the end bars, and D the cross-ties, the wires' being secured to thelatter two in the manner hereinbefore described.

E are the auxiliary ties or supports, set midway, or thereabout, betweenthe cross-ties D, and also between the said cross-ties and the end bars,and which consist simply of flat metal bars with notches h in theirupper edges, and extending across from side to side of the frame, butnot extending upward as far as do the cross-ties D, but only high enoughto receive the lower part of the wires A. This construction is to bepreferred to that of increasing the number of crossties D, since alateral and bottom stay for the wires only is needed at these points,and the rid'ges incidental to the swaging of the cross-ties, if toonumerous, become a disadvantage. The labor and cost of inserting themare less also than that of additional cross-ties; and, indeed, sincethey perform all the functions of the cross-ties 1), with the soleexception of binding down the wires, it may be no disadvantage even toincrease their number and diminish the number of cross-ties D.

The cross-ties D are riveted into the side bars of the frame by means ofa doublel tenon, t', and when introduced as a part of a newlyconstructed tloor, the auxiliary supports E may be secured inthe samemanner, or in any other that may be deemed suitable; but as it isfrequently desired to insert them subse quently to the riveting togetherof the frame, I have devised the following mode for doing so:

At the proper point in the side bar I cut a vertical slot, k, and fromthe base of this slot, and at right angles to the same, I punch out theange l, as shown, the end farthest removed from the slot it' being leftuncut.

A tenen, m, of the same dimensions as the slot k, is formed at each endof the bar E. The bar is inserted from the inside of the frame, thetenons m being brought into the openings left by the flanges l byslightly' curving the bar and then allowing it to straighten; the bar isthen pressed upward as far as possible, bringing the wires A into thenotches h and finally the flanges l are bent back into place, whichbrings them, of course, immediately under the shoulders formed by thetenons m. After this I usually plate the section with tin to preventcorrosion of the metal, and also to seal and tighten the various joints.The slot k and liange l may easily be formed simultaneously with thesame punch.

The side bars, U, of the frame are gashed at the ends, as shown, and thepart n, below the cnt, is flanged inward and riveted to the inner faceof the end bar, D, while the part o, above the cut, extends in each casestraight across the extremity of the said end bar; but for theprojecting, next to be explained, of the wires A beyond the ends of theframe, however, the parts o need not extend past the end bars. Theobvious result of this construction is to close up at the top the spacesincidental to the Hanging of the side bars, C, thus producing tightjoints at the corners. The part o also serves as a stay for eachoutermost tooth on the end bar, which tooth is not only necessarily buthalf the width of the others, but is also in the very place where it ismost liable to be broken off in the process of swaging, thus liberatingthe end ofthe wire.

The extremities p of the wires A project beyond the end bars of theframe, as shown, and the parts o of the side bars extend out to the sidebars are rarely perfectly straight, whereas the line of the extremitiesp of the wires may easily be made so by tiling. Therefore, when twosections are set end to end, as is usual; the adjacent extremities ofthe wires A are in unbroken contact, notwithstanding any unevennesswhich may exist in the end bars of the frame. The latter are boltedtogether, with a space incidentally subsisting between them.

The sections are supported in the usual manner by level beams, and inlaying them I begin at the end with a whole and a fractional sectionalternately, whereby each section terminates at some point between theends of the adjacent ones at its sides. The sections in general all lieso that the wires run one way; but at the sides of the kiln it is oftennecessary, for various reasons, to turn them so that their bars lie atright angles to the others. As the length of each section is just doubleits width, it is clear that they must match perfectly, however they arelaid' but it is necessary also that the bolt-holes 1n the sides and endsof the frame shall be in such relative locations that they will registerexactly with one another, whetherthe sections are laid so as to lap oneanother, as above described, or coincidently, or with the end of oneagainst the side of anotherthe only three ways in which it is possibleto lay them. This I providefor by forming in each endk bar a certaineven number of holes, arranged so as to be equally distant apart, withthe outermost holes distant from the ends of the bar just half the spacebetween contiguous holes, and in the side bars forming just twice asmany holes as in the end bars, at the same distance apart, and with theoutermost holes at the same distance from the ends as in the end bars.This arrangement, bearing in mind that the length of a section is inevery case just double the breadth, will evidently bring the boltholesopposite each other in whichever of the above-mentioned three ways thesections are laid.

I generally employ two holes in each end plate, and four in each sideplate, and since the sections are, as stated,ordinarily made three feetlong by eighteen inches broad, the holes q in Figs. 4 and 5 will,according to the system above explained, be nine inches apart, with theoutermost ones each four and onehalf inches from its adjacent end of thebar. This construction, as to the side bars, neces sarily brings abolt-hole and an auxiliary tiebar, E, in vertical line with each otherin every instance. The said bars E therefore must be made sufficientlynarrow not to interfere with the nut or head of the bolt.

What I claim as new, and desire to secure by Letters Patent, is-

1. The section of a malt-kiln door, compris ing the rectangular frame BO, cross-ties D,

extending from side to side of said frame, blade-shaped wires A, set innotches formed in the said frame and cross-ties, and secured in place byswaging, as described, and intermediate auxiliary bars E, extending fromside to side of the frame, and provided with notches h; Wherein-thelower parts of the blade-shaped wires lie, as and for the purpose setforth.

2. The herein-described mode ot' inserting the auxiliary supports E inframes already riveted together, which consists in providing the saidsupport with a tenon, m, at each end, and cutting through the side barsof the frame slots k, ofthe proper dimensions to receive the tenons m,and also cutting and bending out the described flanges l, then insertingthe tenons m from the inside into the openin gs formed by the flanges l,bringing them into the slots 7c, and nally bending the flanges L backinto place under the tenons m, substantially as set forth.

3. The blade-shaped Wires A, projecting beyond the end bars, U, of theframe, in combination with the parts o above the gashes in the ends ofthe side bars, B, said parts o being conterminous with the said wires A,substantially as and for the purpose described.

4. The rectangular frame, having its length exactly double its breadth,and having in each end bar an even number of bolt-holes placed at equaldistances apart, with each outermost hole distant from its end ot' thebar just half the space between contiguous holes, and having in eachside bar twice as many holes as in each end bar, but at the samedistance apart, and with the outermost holes at the same distance fromthe ends as in the end bars, substantially as and for the purposespecified.

FRED. W. WOLF.

In presence of- GEo. W. EVANS, GEO. M. LocKWooD.

